Rainman0901 said:
IMy mirror is also messed up. ?Here's what I noted.
I'm not familiar with the details on the 2003, but I took a look at the wiring diagrams for 2002. I would be surprised if there are big differences.
The outside temperature sensor is behind the grille, and is wired directly to the inside rearview mirror. All of the circuitry required to decode and display the temperature is inside the mirror. There are no other components or circuitry involved. That means the problem is in one of three places: the sensor, the wiring, or the mirror with it's internal circuitry.
If the problem were in the sensor or wiring, then both the Farenheit and Celsius numbers would be wrong. However, since the Celsius seems reasonable, and Farenheit is not, It would seem that the problem has got to be in the mirror.
Resetting the electronics in the mirror may help in the short run, but it is apparently not a long term solution.
I would press the dealer to replace the mirror. I've not seen nor diagnosed your truck, but logic points to the mirror as being the culprit.
When it does read below 35F it says IEE not ICE
As this is another function that is strictly inside the mirror, this seems to confirm the need to replace the mirror.
ALSO: Does anyone know where the sensor is that makes the mirror dim? Is it in the mirror? Is it on the back? ?Where is it
? ahhhhh
Again, not sure on the 2003, but on the 2002 there are two light sensors: one on the front and another on the back of the inside mirror. When it sees that the view out the windshield is dark and the view out the back window is light, it assumes there is glare behind you and dims both the inside and outside mirrors at the same time. If the view out the back window is dark, or out the windshield is light, it does not dim.
The light sensors are behind small hole that are in recesses smaller than a pencil eraser head.
Hope this helps, and I hope it applies to your truck.
-- SS